JP2021162320A - Information provision device, method for providing information, and program - Google Patents

Abstract

To provide an information provision device, a method for providing information, and a program which can provide a user with information on a route more properly.SOLUTION: An information provision server 200 as an information provision device includes: a route generation unit 254 for generating a plurality of routes to a destination for a user; a derivation unit 256 for deriving an evaluation value for a road forming the plurality of routes generated by the route generation unit on the basis of directivity information showing the directivity of a user; and a provision information generation unit 258 for generating provision information for the routes generated by the route generation unit on the basis of the evaluation value derived by the derivation unit. The route generation unit generates a reference route not based on the directivity information and a directivity route based on the directivity information. The provision information generation unit generates provision information for the directivity route on the basis of the evaluation value in the reference route derived by the derivation unit.SELECTED DRAWING: Figure 3

Description

The present invention relates to an information providing device, an information providing method, and a program.

Conventionally, there has been known a technology related to a navigation system that keeps the latest guidance information available by acquiring map information such as roads and buildings and surrounding information from an information providing center based on the position information of a vehicle. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2004-138582

However, in the past, when a route to a destination is generated according to the user's orientation, information about the route may not be appropriately provided to the user.

Aspects of the present invention have been made in consideration of such circumstances, and an object of the present invention is to provide an information providing device, an information providing method, and a program capable of more appropriately providing information on a route to a user. It is one of.

The information providing device, the information providing method, and the program according to the present invention have adopted the following configurations.
(1): The information providing device according to one aspect of the present invention relates to a route generation unit that generates a plurality of routes to a user's destination, and a road that constitutes a plurality of routes generated by the route generation unit. Based on the derivation unit that derives the evaluation value based on the directivity information indicating the directivity of the user and the evaluation value derived by the derivation unit, the provided information for the route generated by the route generation unit is generated. A provided information generation unit is provided, the route generation unit generates a reference path not based on the directional information and a directional route based on the directional information, and the provided information generation unit is derived by the derivation unit. It is an information providing device that generates information provided for the directional route based on the evaluation value in the reference route.

(2): In the aspect of (1) above, the derivation unit derives evaluation values for each of a plurality of evaluation indexes related to the road based on the directivity information, and the provided information generation unit is derived by the derivation unit. Among the evaluation values in the derived reference route, the information provided for the directivity route is generated based on the evaluation value that does not follow the directivity of the user.

(3): In the aspect of (2) above, the provided information generation unit is the least in line with the directivity of the user among the evaluation values for each road link constituting the reference route derived by the out-licensing unit. The information provided for the directional route is generated based on the evaluation index of the road link from which the evaluation value is derived.

(4): In any one of the above (1) to (3), a management unit for managing the directivity information regarding the user's directivity is further provided, and the management unit is a plurality of predetermined roads. It manages the user's directivity information for each evaluation index.

(5): In the aspect of (4) above, the management unit includes a generation route generated by the route generation unit and provided to the user, and an actual travel route actually traveled by the vehicle driven by the user. The difference data between the evaluation value of the road link of the generated route associated with the extracted divergence portion and the evaluation value of the road link of the actual driving route associated with the divergence portion is obtained. It is derived, and the orientation information of the user is updated based on the derived difference data.

(6): In the aspect of (5) above, the management unit updates the orientation information of the user when the evaluation value included in the difference data is equal to or greater than the threshold value.

(7): In the aspect of (5) or (6) above, the management unit has the length of the road of the road link corresponding to the actual traveling route deviating from the generated route or the time required to travel on the road. The difference data of the evaluation value is derived by adding a weight according to the above.

(8): In the information providing method according to one aspect of the present invention, the computer generates a plurality of routes to the user's destination, and the user evaluates the roads constituting the generated plurality of routes. Derived based on the directivity information indicating the directivity of, and based on the derived evaluation value, the provided information for the generated route is generated, and when the plurality of routes are generated, the reference route not based on the directivity information This is an information providing method that generates a directional path based on the directional information and a directional path based on the directional information, and generates provided information for the directional path based on an evaluation value in the reference path.

(9): The program according to one aspect of the present invention causes a computer to generate a plurality of routes to a user's destination, and evaluates the generated roads constituting the plurality of routes by the user. A reference route that is not based on the directivity information when it is derived based on the directivity information indicating the directivity, the provided information for the generated route is generated based on the derived evaluation value, and the plurality of routes are generated. This is a program that generates a directional path based on the directional information and a directional path based on the directional information, and generates information provided for the directional path based on an evaluation value in the reference path.

According to the above aspects (1) to (9), information on the route can be provided to the user more appropriately.

It is a block diagram of the information providing system 1 to which the information providing apparatus which concerns on embodiment is applied. It is a block diagram of the guide device 100 which concerns on embodiment. It is a figure which shows an example of the configuration of the information providing server 200 which concerns on embodiment. It is a figure which shows an example of the contents of the road link DB242. It is a figure which shows an example of the contents of the direction information DB 243. It is a figure for demonstrating that a route is generated by a route generation part 254. It is a figure which shows an example of the contents of the provided information DB 224. It is a figure for demonstrating updating the orientation information of a user. It is a figure which shows an example of the data of the cost value for each evaluation index in each road link. It is a figure which shows an example of the cost value for each of the generation path Rb and the actual travel path R0. It is a figure which shows an example of the difference data of the cost value between the generation path Rb and the actual travel path R0. It is a flowchart which shows the flow of the process executed by the information providing server 200 which concerns on embodiment. It is a block diagram of the guide device 100A which has some functions of an information providing server 200.

Hereinafter, the information providing device, the information providing method, and the embodiment of the program of the present invention will be described with reference to the drawings.

[System configuration]
FIG. 1 is a configuration diagram of an information providing system 1 to which the information providing device according to the embodiment is applied. The information providing system 1 according to the embodiment includes, for example, a guidance device 100 and an information providing server 200. The information providing server 200 is an example of an “information providing device”. In the illustrated example, the guidance device 100 is mounted on the vehicle M. The vehicle M is, for example, a vehicle such as a two-wheeled vehicle, a three-wheeled vehicle, or a four-wheeled vehicle. The drive source of these vehicles may be an internal combustion engine such as a diesel engine or a gasoline engine, an electric motor, or a combination thereof. The electric motor operates by using the electric power generated by the generator connected to the internal combustion engine or the electric power generated by the secondary battery or the fuel cell.

The guidance device 100 and the information providing server 200 are communicably connected via the network NW. The network NW includes a LAN (Local Area Network), a WAN (Wide Area Network), and the like. The network NW may include, for example, a network using wireless communication such as Wi-Fi or Bluetooth (registered trademark, hereinafter omitted). Further, the information providing system 1 may be provided with a plurality of vehicles each provided with a guidance device 100, or may be provided with a plurality of information providing servers 200.

The guidance device 100 provides the occupant of the vehicle M (an example of a user) with a route to a destination instructed by the occupant and guidance information regarding the route. The guidance information includes, for example, POI (Point Of Interest) information and road information. The POI information is, for example, information about a target object associated with a position (coordinate information) on a map. Targets include, for example, stores and facilities, structures such as bridges and steel towers, and features such as topographical features (mountains, rivers, seas, ponds, lakes). Further, the road information includes, for example, information on the road shape, the number of lanes, and traffic rules. Further, the guidance device 100 communicates with the information providing server 200 via the network NW, receives map data and route information acquired from the information providing server 200, and informs the information providing server 200 about the vehicle M and the occupants. Sends route inquiry information, etc. Further, when the information providing server 200 generates a route according to the user's orientation information, the guidance device 100 provides the occupant with the generated route, the reason for selecting the route (recommended reason), and the like. The directivity information is, for example, information indicating the directivity of the user, specifically, information indicating the user's way of thinking about the road on which the vehicle is traveling, information indicating preference (information on preference), and the user. Information that indicates important matters.

The information providing server 200 communicates with the guidance device 100, and transmits various information such as map data and route information to the guidance device 100 based on the inquiry information from the guidance device 100. In this case, the information providing server 200 may receive the inquiry information from the guidance device 100 and transmit the corresponding information (inquiry result), or may transmit various information to the guidance device 100 at a predetermined timing. Hereinafter, the configurations of the guidance device 100 and the information providing server 200 will be specifically described.

[Guide device]
FIG. 2 is a diagram showing an example of the configuration of the guide device 100 according to the embodiment. The guidance device 100 includes, for example, an in-vehicle camera 102, a vehicle sensor 104, a GNSS (Global Navigation Satellite System) receiver 106, an HMI (Human Machine Interface) 108, a communication unit 110, a storage unit 120, and a control unit. It is equipped with 130. These devices and devices may be connected to each other by a multiplex communication line such as a CAN (Controller Area Network) communication line, a serial communication line, a wireless communication network, or the like. The configuration of the guidance device 100 shown in FIG. 2 is merely an example, and a part of the configuration may be omitted or another configuration may be added.

The in-vehicle camera 102 is installed, for example, in the vehicle interior of the vehicle M equipped with the guidance device 100, and images the faces of each occupant seated on the seat in the vehicle interior. The in-vehicle camera 102 is, for example, a digital camera that uses a solid-state image sensor such as a CCD (Charge Coupled Device) or a CMOS (Complementary Metal Oxide Semiconductor). The in-vehicle camera 102 repeatedly images each occupant at a predetermined timing, for example. The in-vehicle camera 102 generates image data of the occupant and outputs the generated image data to the control unit 130.

The vehicle sensor 104 includes an orientation sensor that detects the direction of the vehicle M, a vehicle speed sensor that detects the speed of the vehicle M, an acceleration sensor that detects the acceleration of the vehicle M, and a yaw rate sensor that detects the angular speed around the vertical axis of the vehicle M. Includes a torque sensor and the like that detect the steering torque applied to the rotating shaft of the steering wheel. The vehicle sensor 104 outputs data including the detected direction, speed, acceleration, etc. (hereinafter, referred to as vehicle state data) to the control unit 130.

The GNSS receiver 106 receives a signal (radio wave) from an artificial satellite such as GPS (Global Positioning System), and identifies the position of the vehicle M based on the received signal. The position of the vehicle M may be specified or complemented by an INS (Inertial Navigation System) using the vehicle state data output by the vehicle sensor 104. The GNSS receiver 106 outputs position data indicating the position of the specified vehicle M to the control unit 130. The GNSS receiver 106 may be included in the vehicle sensor 104 as a position sensor.

The HMI 108 presents various information to the occupant of the vehicle M and accepts an input operation by the occupant. The HMI 108 includes, for example, a display device, a speaker, a microphone, a buzzer, a touch panel, a switch, a key, and the like. The display device includes, for example, a meter display provided on a portion of the instrument panel facing the driver of the vehicle M, a center display provided in the center of the instrument panel, a HUD (Head Up Display), and the like. The HUD is, for example, a device that superimposes an image on a landscape so that the viewer can visually recognize the image. .. Further, the HMI 108 displays an image on the display device and outputs sound from the speaker under the control of the output control unit 134. HMI 108 is an example of an "output unit".

The communication unit 110 includes, for example, a communication interface such as an antenna or a NIC (Network Interface Card). The communication unit 110 communicates with the information providing server 200, other external devices, and the like via the network NW under the control of the communication control unit 135.

The storage unit 120 is realized by, for example, an HDD (Hard Disk Drive), a flash memory, an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), a RAM (Random Access Memory), or the like. The storage unit 120 stores, for example, a program referenced by the processor of the guidance device 100, map data 122, and various other information.

The map data 122 is, for example, data in which a road shape is represented by a link indicating a road associated with location information (hereinafter referred to as a road link) and a node connected by the road link. Further, the map data 122 may include information on the curvature of the road, lane information, and guidance information associated with the position information.

The control unit 130 includes, for example, a vehicle information acquisition unit 131, a user identification unit 132, a route inquiry unit 133, an output control unit 134, and a communication control unit 135. These components are realized, for example, by executing a program (software) by a processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit). In addition, some or all of these components are determined by hardware (including circuit section; circuitry) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), and FPGA (Field-Programmable Gate Array). It may be realized, or it may be realized by the collaboration of software and hardware. The program may be stored in advance in a storage unit (a storage device including a non-transient storage medium) 120 of the guidance device 100, or a removable storage medium (non-transient) such as a DVD or a CD-ROM. It is stored in the storage medium), and may be installed in the HDD or the flash memory of the guidance device 100 by mounting the storage medium in the drive device.

The vehicle information acquisition unit 131 acquires, for example, image data captured by the in-vehicle camera 102, or input data such as operation details and voice received by the HMI 108. The input data includes, for example, data indicating a destination. Further, the vehicle information acquisition unit 131 acquires vehicle state data from, for example, the vehicle sensor 104. Further, the vehicle information acquisition unit 131 acquires the position data of the vehicle M from the GNSS receiver 106. The vehicle information acquisition unit 131 generates a travel history in which the vehicle M actually travels based on the acquired information, and even if the generated travel history information is transmitted to the information providing server 200 via the communication unit 110. good.

The user identification unit 132 identifies an occupant who has specified a destination and an occupant who is on board. For example, the user identification unit 132 identifies the occupant by causing the occupant to operate the HMI 108 at a predetermined timing and accepting the input of the user ID which is the identification information for identifying the occupant. The predetermined timing is, for example, the timing when the occupant gets on the vehicle, the timing when the operation is started, and the timing when the route inquiry unit 133 starts the process of inquiring the information providing server 200 about the route to the destination.

Further, the user identification unit 132 acquires the feature information of the occupant's face by analyzing the image captured by the in-vehicle camera 102, and the acquired feature information and the collation DB (preliminarily stored in the storage unit 120 or the like) ( The occupant may be specified with reference to (not shown). The feature information is, for example, the contour of the face, the relative position of parts such as eyes, nose, mouth, and ears in the area of the face, skin color information, and the like. Further, the feature information may be a parameter of the classification model acquired by machine learning such as deep learning. The user identification unit 132 collates the facial feature information acquired from the image of the in-vehicle camera 102 with the feature information of the collation DB, and selects the user with the user ID associated with the feature information having the highest degree of similarity as the vehicle M. Identify as the user (occupant) on board. Further, when there are a plurality of occupants included in the image data, the user identification unit 132 may specify the occupant seated in a predetermined seat (for example, the driver's seat) as the occupant who has designated the destination. In addition, when the operation of the occupant by the HMI 108 is not accepted, or when the occupant cannot be identified from the image data captured by the in-vehicle camera 102, the user identification unit 132 designates the specific occupant last time as the destination. It may be specified as a occupant who has specified a destination, or a predetermined occupant (for example, the owner of the vehicle M) may be specified as a occupant who has specified a destination.

The route inquiry unit 133 receives inquiries about the route from the occupant to the destination. The route inquiry may be received by operating the screen of the display device by the HMI 108, or may be received by the voice data collected from the microphone. When the route inquiry unit 133 receives an inquiry about the route to the destination, the route inquiry unit 133 identifies the information indicating the destination, the information indicating the position of the vehicle M acquired by the vehicle information acquisition unit 131, and the user identification unit 132. Inquiry information including the generated user information is generated, and the generated inquiry information is transmitted to the information providing server 200 by the communication unit 110. Further, the route inquiry unit 133 acquires the inquiry result from the information providing server 200 received by the communication unit 110.

The output control unit 134 acquires an inquiry result (an example of the provided information) for the inquiry information transmitted to the information providing server 200 by the route inquiry unit 133, and generates information or the like to be provided to the occupant based on the acquired inquiry result. Then, the generated information is output by the HMI 108. The generated information includes images, sounds, and the like. In addition, the generated information includes route information to the destination, a reason for recommending a predetermined route, and the like. For example, the output control unit 134 generates route guidance information based on the route information and the map data 122, and outputs the generated route guidance information from the HMI 108. Further, the output control unit 134 may update the map data 122 based on the update data when the map update data is acquired from the information providing server 200.

The communication control unit 135 controls the transmission and reception of data to and from the information providing server 200 and the external device by the communication unit 110. For example, the communication control unit 135 causes the communication unit 110 to transmit inquiry information, travel history, etc. from the communication unit 110 to the information providing server 200, and causes the communication unit 110 to receive information provided from the information providing server 200 (inquiry result and map data). Or Further, the communication control unit 135 may cause the communication unit 110 to transmit vehicle state data, information on occupants, and the like to the information providing server 200 and an external device.

[Information providing server]
FIG. 3 is a configuration diagram of the information providing server 200 according to the embodiment. The information providing server 200 includes, for example, a communication unit 210, an input unit 220, an output unit 230, a storage unit 240, and a control unit 250. The configuration of the information providing server 200 shown in FIG. 3 is merely an example, and a part of the configuration may be omitted or another configuration may be added.

The communication unit 210 includes, for example, a communication interface such as an antenna or a NIC. The communication unit 210 communicates with the guidance device 100, an external device, and the like via the network NW under the control of the communication control unit 262.

The input unit 220 is, for example, a user interface such as a button, a keyboard, or a mouse. The input unit 220 accepts operations by the server administrator and the like. The input unit 220 may be a touch panel configured integrally with the display unit of the output unit 230, or may be a microphone capable of voice input.

The output unit 230 outputs information to the server administrator and the like. The output unit 230 includes, for example, a display unit for displaying an image and an audio output unit for outputting audio. The display unit includes, for example, a display device such as an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) display. The display unit displays an image of information output by the server-side control unit 140. The audio output unit is, for example, a speaker. The audio output unit outputs, for example, the audio of the information displayed on the display unit.

The storage unit 240 is realized by, for example, an HDD, a flash memory, an EEPROM, a ROM, a RAM, or the like. The storage unit 240 stores, for example, a program referenced by the processor, server-side map data 241, road link DB (Database) 242, direction information DB 243, provided information DB 244, travel history 245, and various other information.

The server-side map data 241 stores the same items as the map data 122. Further, the server-side map data 241 stores the latest and wide range of map data. In the road link DB 242, for example, a physical quantity for each evaluation index related to the road is stored for each road link. The evaluation index related to the road is, for example, information on the required time during traveling, the road width, the traffic volume, the amount of pedestrians, the amount of parking on the road, and the like. The directional information DB 243 stores, for example, directional information for each user who uses the vehicle M. The provided information DB 244 stores, for example, provided information associated with an evaluation index for each road link. Details of the road link DB 242, the direction information DB 243, and the provided information DB 244 will be described later. In the travel history 245, for example, information regarding the actual travel route actually traveled by the vehicle M with respect to the route (generated route) to the destination provided to the user is stored.

The control unit 250 includes, for example, an acquisition unit 252, a route generation unit 254, a derivation unit 256, a provision information generation unit 258, a management unit 260, and a communication control unit 262. These components are realized, for example, by executing a program (software) by a processor such as a CPU or GPU. Further, some or all of these components may be realized by hardware such as LSI, ASIC, FPGA (including circuit section; circuitry), or realized by cooperation between software and hardware. May be good. The program may be stored in advance in the storage unit (storage device including a non-transient storage medium) 240 of the information providing server 200, or a removable storage medium (non-transient) such as a DVD or a CD-ROM. It is stored in a sex storage medium), and may be installed in the HDD or flash memory of the information providing server 200 by mounting the storage medium in the drive device.

The acquisition unit 252 acquires inquiry information regarding the route from the guidance device 100 via the communication unit 210. Further, the acquisition unit 252 may acquire information on the user's orientation information and the travel history of the vehicle M from the guidance device 100. In addition, the acquisition unit 252 may acquire inquiry information and the like regarding update data of map data from the guidance device 100.

The route generation unit 254 generates a route from the current position of the vehicle M to the destination by referring to the server-side map data 241 when the inquiry information of the route to the destination is acquired by the acquisition unit 252. For example, the route generation unit 254 generates a plurality of routes to the user's destination. The plurality of routes include a reference route generated based on a predetermined reference condition without being based on the user's directional information, and a directional route generated based on the user's directional information. The predetermined reference condition is, for example, that the distance from the current position to the destination is the shortest, or that the expected traveling time from the current position to the destination is the shortest.

The derivation unit 256 derives the evaluation values for the roads constituting the plurality of routes generated by the route generation unit 254 based on the user's orientation information.

The provided information generation unit 258 generates the provided information for the route generated by the route generation unit 254 based on the evaluation value derived by the out-licensing unit 256. For example, the provided information generation unit 258 generates the provided information for the directional route based on the evaluation value in the reference route derived by the out-licensed unit 256. The provided information includes route information generated by the route generation unit 254, guidance information for the route, and the like. The provided information generation unit 258 provides information to the user by outputting the provided information to the HMI 108 as an inquiry result.

The management unit 260 stores and manages the physical quantity related to the road for each road link included in the server-side map data 241 in the road link DB 242. FIG. 4 is a diagram showing an example of the contents of the road link DB 242. In the road link DB 242, a reference date and time, a required time [minutes], a road width [m], a traffic volume, a pedestrian amount, and a parking amount on the road are associated with a link ID which is identification information for identifying a road link. Time required, road width, traffic volume, pedestrian volume, and on-street parking volume are each examples of evaluation indicators for roads. The reference date and time is information indicating the date and time when the required time, the road width, the traffic volume, the pedestrian amount, and the physical quantity (an example of the evaluation value) for the on-street parking amount are derived, or when the information is stored in the road link DB242. be. In addition, the date and time may include information indicating a time zone. The required time is the traveling time of the vehicle M when traveling on the entire road of the road link. The required time is calculated, for example, by dividing the mileage by a predetermined speed based on a legal speed or the like. The road width may be the road width of the road of the road link, or may be an index value derived from the road width. The traffic volume may be the number of other vehicles traveling on the road of the road link at the reference date and time, or may be an index value derived from the number of vehicles. Further, the pedestrian amount may be the number of pedestrians walking on the road of the road link at the reference date and time, or may be an index value derived from the number of pedestrians. Further, the amount of parking on the street may be the number of vehicles parked on the road of the road link at the reference date and time, or may be an index value derived from the number of vehicles. The management unit 260 may update the information of the road link DB 242 based on the value input by the server administrator or the like, for example, from the image taken by the camera or the like installed near the road corresponding to the link ID. The road condition may be analyzed to derive the physical quantity for each evaluation index described above.

In addition, the management unit 260 manages the directivity information regarding the directivity of the user. For example, the management unit 260 stores and manages the user's orientation information for each of a plurality of predetermined evaluation indexes in the orientation information DB 243. FIG. 5 is a diagram showing an example of the contents of the directional information DB 243. The directional information DB 243 is, for example, information in which a plurality of evaluation indexes and the degree of importance of each evaluation index in the user ID, which is identification information for identifying a user, are associated with each other. The degree of importance is an example of an evaluation value. The evaluation index includes the width of the road on which the vehicle M travels, the traffic volume of other vehicles, the amount of pedestrians walking on the road, the amount of parking on the road, and the like. In addition to the above, the evaluation index may include the presence or absence of curved roads, the number of lanes, the appearance of the vehicle during traveling, and the like. Further, in the example of FIG. 5, the value of the degree of importance increases as the evaluation index is more emphasized by the user. In the example of FIG. 5, the user with the user ID "U001" has a high degree of importance on the amount of pedestrians (very concerned about the amount of pedestrians on the road) and a low degree of importance on the road width (about the road width of the road). I don't care).

In addition, the management unit 260 updates the orientation information DB 243. For example, the management unit 260 extracts a divergence portion between the generation route generated by the route generation unit 254 and the actual travel route actually traveled by the vehicle M driven by the user, and based on the information of the extracted divergence portion. , The orientation information of the user stored in the orientation information DB 243 is updated. The details of the direction information update process in the management unit 260 will be described later.

The communication control unit 262 controls the transmission and reception of data with the guidance device 100 and the external device by the communication unit 210. For example, the communication control unit 262 receives the inquiry information from the guidance device 100 by the communication unit 210, and controls the communication unit 210 to transmit the inquiry result or the like for the received inquiry information to the guidance device 100.

[Route generation]
Next, the route generation process in the information providing server 200 will be described in detail. FIG. 6 is a diagram for explaining that a route is generated by the route generation unit 254. In the example of FIG. 6, the current position P1 of the vehicle M, the destination P2, and the road links RL1 to RL5 are schematically shown. The points connecting the road links RL indicate nodes.

The route generation unit 254 refers to the server-side map data 241 based on the information of the current position P1 and the destination P2 of the vehicle M included in the inquiry information from the guidance device 100, and from the current position P1 to the destination P2. Generate multiple routes. For example, the route generation unit 254 generates a reference route corresponding to a predetermined reference condition without using the user's orientation information. In the example of FIG. 6, a route composed of road links RL1 and RL2 is generated as a reference route when the reference condition is the shortest distance.

Further, the route generation unit 254 generates a directional route based on the index value for the road link derived by the out-licensing unit 256. In this case, the derivation unit 256 is included in the physical quantity for each evaluation index and the user's orientation information acquired from the orientation information DB 243 for each road link that can travel from the current position P1 to the destination P2 with reference to the road link DB 242. The degree of importance for each evaluation index is acquired, and the cost value for each road link is calculated based on the acquired physical quantity and the degree of importance. The cost value is an example of an index value. For example, the degree of importance of the evaluation indexes A, B, and C included in the orientation information is αa, αb, and αc, and the physical quantities of the evaluation indexes A, B, and C associated with the road link are βa, βb, and βc. In this case, the out-licensing unit 256 calculates the cost value using the following equation (1).
Cost value = αa × βa + αb × βb + αc × βc ・ ・ ・ (1)

Further, the out-licensing unit 256 may calculate the cost value by adding a weight according to the length of the road for each road link. Assuming that the weight corresponding to the length of the road link is w, the out-licensing unit 256 calculates the cost value using the following equation (2).
Cost value = (αa × βa + αb × βb + αc × βc) × w ・ ・ ・ (2)

In addition, the derivation unit 256 may derive the cost value by using a table in which the cost value is associated with the degree of importance and the physical quantity instead of the above-mentioned equation (1), and instead of the above-mentioned equation (2). Therefore, the cost value may be derived using a table in which the cost value is associated with the weight according to the degree of importance, the physical quantity, and the length of the road.

Here, as for the cost value calculated by the above-mentioned equation (1) or (2), the greater the degree of importance and the larger the physical quantity, the larger the cost value of the evaluation index, and the more the evaluation index having a large value. , The overall cost value also increases. In addition, the larger the cost value, the greater the anxiety factor of the user while driving. Therefore, the route generation unit 254 generates a route composed of road links whose cost value derived by the out-licensing unit 256 is equal to or less than a predetermined value (for example, the cost value is 15 or less) as a directional route. In the example of FIG. 6, the route traveling on the road links RL3, RL4, and RL5 is generated as a directional route. The route generation unit 254 may generate a plurality of directional routes. In the following, the case where the directional route having the smallest average or total cost value of each road link is generated will be described. The directional route with the smallest average or total cost value is the route with the smallest directionalness of the user. Further, the out-licensing unit 256 derives a cost value for each road link constituting the reference route.

The provision information generation unit 258 generates the provision information for the directional route based on the cost value that does not follow the directivity of the user among the cost values in the reference route derived by the derivation unit 256. A cost value that does not follow the user's directivity is a cost value that is equal to or higher than a predetermined value. For example, the provided information generation unit 258 uses the cost value for each road link that constitutes the reference route derived by the out-licensing unit 256 as the evaluation index of the road link from which the cost value that is least in line with the user's directivity is derived. Based on this, the provided information for the directional path is generated. The cost value that is least in line with the user's directivity is the cost value of the road link having the maximum cost value among the plurality of road links constituting the reference route.

Therefore, the provided information generation unit 258 acquires the cost value for each evaluation index of the road link having the largest cost value (road link RL1 in FIG. 6) among the road links constituting the reference route. Then, the provided information generation unit 258 refers to the provided information DB 224 based on the evaluation index having the highest cost value among the cost values for each evaluation index and the cost value, and corresponds to the evaluation index and the cost value. Generate the attached provided information. FIG. 7 is a diagram showing an example of the contents of the provided information DB 224. The provided information DB 224 is information in which the provided information is associated with the evaluation index and the cost value. The provided information includes, for example, information on the reason for recommending the directional route and referral information for the directional route. In the example of FIG. 7, the information "If the directional route is used, the road with many pedestrians can be avoided" is stored as the information regarding the reason for recommending the directional route, and the information "The directional route is on the road" is stored as the introduction information. It is a route with less parking. "

In this way, by providing the recommended reason for the directional route based on the cost value of the reference route, the difference part with respect to the reference route and the recommended reason along the user's orientation are provided to the user in an easy-to-understand manner. be able to. In the example of FIG. 6, the cost value of the pedestrian amount is 20 among the evaluation indexes associated with the road link RL1. Therefore, the provided information generation unit 258 refers to the provided information DB 244 and provides the provided information IN1 that is associated with the evaluation index and the cost value, "If it is a directional route, a road with many pedestrians can be avoided." It is provided to the guidance device 100 together with the directional path. Further, the provided information generation unit 258 may transmit both the reference route and the directional route to the guidance device 100 to allow the user to select one of the routes.

[Update orientation information]
Next, the update of the orientation information for each user in the management unit 260 will be specifically described. FIG. 8 is a diagram for explaining updating the user's orientation information. In the example of FIG. 8, it is assumed that the generation route Rb and the actual travel route R0 deviate from each other in the section from the point P3 to the point P4. The generation route Rb is, for example, a route actually provided by the user's selection or the like among the reference route or the directional route generated by the information providing server 200. Further, in the example of FIG. 8, the road links RLa to RLc indicate the road links of the actual traveling route R0, and the road links RLd to RLe indicate the road links of the generated route Rb.

For example, the management unit 260 extracts a divergence portion between the generation route Rb generated by the route generation unit 254 and the actual travel route R0 included in the travel history 245, and the generation route Rb associated with the extracted divergence portion. The difference data between the evaluation value of the road link and the evaluation value of the road link of the actual traveling route R0 associated with the divergent portion is derived. Then, the management unit 260 updates the user's orientation information based on the derived difference data.

For example, the management unit 260 acquires the physical quantity associated with the road links RLa to RLe from the road link DB 242, refers to the direction information DB 243 based on the user ID, and acquires the direction information of the user matching the user ID. do. Next, the management unit 260 generates data obtained by converting the physical quantity for each evaluation index into a cost value (an example of the evaluation value) using the orientation information. FIG. 9 is a diagram showing an example of cost value data for each evaluation index at each road link. In the example of FIG. 9, the cost values of the required time, the road width, the traffic volume, the pedestrian amount, and the parking amount on the street, which are physical quantities, are stored for each link ID. For example, the management unit 260 derives the cost conversion data as shown in FIG. 9 by multiplying the physical quantity and the degree of importance of the directivity information for each evaluation index at each road link and normalizing the value. .. The cost value conversion method is not limited to this, and may be converted into a cost value without normalization, or may be converted into a cost value by adding a weight according to the length of the road. good.

Next, the management unit 260 weighted and averages the cost values for each evaluation index of each road link constituting the route based on the required time for each road link included in the data shown in FIG. 9, and generates the route Rb and the actual route Rb. The cost value for each evaluation index for each of the travel paths R0 is derived. FIG. 10 is a diagram showing an example of cost values for each evaluation index of the generation route Rb and the actual travel route R0. In the example of FIG. 10, the route ID for identifying the route is associated with a road width, a traffic volume, a pedestrian amount, and a cost value for each on-street parking amount, which are examples of evaluation indexes. For example, the management unit 260 increases the weight (increases the degree of weighting) as the required time becomes longer, and performs the weighted averaging. In addition, the management unit 260 may perform a weighted average according to the length of the road of the road link instead of (or in addition to) the required time. In this case, the management unit 260 performs weighted averaging by increasing the weight as the length of the road of the road link becomes longer. As a result, a more appropriate cost value can be derived for each route. The management unit 260 may derive the cost value by a simple average instead of the weighted average.

Next, the management unit 260 derives the difference in cost value between the generation route Rb and the actual travel route R0. FIG. 11 is a diagram showing an example of difference data of cost values between the generated route Rb and the actual traveling route R0. In the example of FIG. 11, as the difference data, the amount of change in the cost value of the actual travel route R0 with respect to the generation route Rb is shown. The management unit 260 refers to the direction information DB 243 based on the difference data for each evaluation index, and updates the degree of importance of the evaluation index associated with the user corresponding to the user ID. For example, the management unit 260 may update the degree of importance by adding the amount of change in the difference data to the degree of importance for each evaluation index, and adds or subtracts the value normalized based on the difference data to the degree of the center of gravity to obtain the center of gravity. The degree may be updated. Further, the management unit 260 may update only the degree of the center of gravity of the evaluation index when the absolute value of the value (evaluation value) included in the difference data is equal to or more than the threshold value. For example, in the example of FIG. 11, when the threshold value is 0.3, only the degree of center of gravity (evaluation value) relating to the amount of parking on the street is updated. As a result, it is possible to prevent the orientation information from being updated frequently.

It is presumed that the actual travel route R0 is a route intentionally traveled by the user. Therefore, by changing the directivity information based on the difference between the generation route Rb and the actual travel route R0, it is possible to generate a directivity route that matches the user's orientation in the next and subsequent route generation.

[Processing flow]
FIG. 12 is a flowchart showing a flow of processing executed by the information providing server 200 according to the embodiment. In the following, the user's orientation information is generated based on the process of generating the route information corresponding to the inquiry and transmitting the generated route information to the guidance device (route generation process), and the generated route and the actual traveling route. The update process (update process) will be described together. The route generation process and the update process may be executed at different timings.

In the example of FIG. 12, the acquisition unit 252 acquires the inquiry information of the route from the guidance device 100 to the destination (step S100). Next, the route generation unit 254 generates a reference route based on the reference condition based on the inquiry information (step S102). Further, the route generation unit 254 acquires the user's directivity information and generates a directivity route based on the acquired directivity information (step S104). The processes of steps S102 and S104 may be performed in the reverse order.

Next, the derivation unit 256 derives the cost value for the reference path (step S106). The provided information generation unit 258 acquires the provided information for the directional path based on the derived cost value (step S108). Next, the provided information generation unit 258 transmits the generated route and the provided information to the guidance device (step S110). The processes of steps S100 to S110 correspond to the route generation process.

Next, the acquisition unit 252 acquires the travel history including the actual travel route of the vehicle M from the guidance device 100 (step S112). Next, the management unit 260 derives the difference between the index values (cost values) related to the evaluation index based on the deviation information between the route generated based on the inquiry information and the actual travel route included in the travel history (step). S114). Next, the management unit 260 updates the user's orientation information based on the derived difference data (step S116). The processes of steps S112 to S116 correspond to the first process. As a result, the processing of this flowchart ends.

According to the above-described embodiment, information on the route can be provided to the user more appropriately. For example, according to the present embodiment, it is generated according to the user's orientation by identifying the main factors that make the difference between the reference path and the directional path stand out and providing information corresponding to the factors. The reason for recommending the route can be provided in an easy-to-understand manner to the user.

<Modification example>
In the embodiment, a part or all of the above-described components related to the information providing server 200 may be provided in the guidance device 100. FIG. 13 is a configuration diagram of a guidance device 100A having a part of the functions of the information providing server 200. The guide device 100A is different from the guide device 100 shown in FIG. 2 in that it includes a storage unit 120A and a control unit 130A instead of the storage unit 120 and the control unit 130. In addition to the data stored in the storage unit 120, the storage unit 120A stores the road link DB 123, the directivity information DB 124, the provided information DB 125, and the travel history 126. Further, the control unit 130A is different from the control unit 130 in that it includes a route generation unit 136, a derivation unit 137, a provided information generation unit 138, and a management unit 139 instead of the route inquiry unit 133. .. The guidance device 100A is an example of an “information providing device”.

The road link DB 123 stores the same data as the road link DB 242, and the provided information DB 125 stores the same data as the provided information DB 244. The directional information DB 124 stores the directional information of only the user of the vehicle M equipped with the guidance device 100A among the directional information DB 243, and the traveling history 126 contains only the traveling history of the vehicle M equipped with the guidance device 100A. Stored.

The route generation unit 136, the derivation unit 137, the provision information generation unit 138, and the management unit 139, respectively, use the various data stored in the storage unit 120A to use the route generation unit 254, the derivation unit 256, and the provision information generation unit 258, respectively. , And the same processing as the management unit 260 is executed. As a result, the guidance device 100A mounted on the vehicle M can more appropriately provide the user with information on the route. Further, according to the configuration of FIG. 13, since it is not necessary to make an inquiry to the server side every time a route is generated, an appropriate route can be provided more quickly even in a situation where the information providing server 200 cannot be connected via the network NW. can do.

The embodiment described above can be expressed as follows.
A storage device that stores programs and
With a hardware processor,
When the hardware processor executes a program stored in the storage device,
Generate multiple routes to the user's destination,
The generated evaluation values for the roads constituting the plurality of routes are derived based on the directivity information indicating the directivity of the user.
Based on the derived evaluation value, the provided information for the generated route is generated.
When generating the plurality of routes, a reference route that is not based on the directional information and a directional route that is based on the directional information are generated.
Generates information provided for the directional route based on the evaluation value in the reference route.
An information providing device that is configured as such.

Although the embodiments for carrying out the present invention have been described above using the embodiments, the present invention is not limited to these embodiments, and various modifications and substitutions are made without departing from the gist of the present invention. Can be added.

1 ... Information providing system, 100, 100A ... Guidance device, 102 ... In-vehicle camera, 104 ... Vehicle sensor, 106 ... GNSS receiver, 108 ... HMI, 110, 210 ... Communication unit, 120, 120A, 240 ... Storage unit, 130 , 130A, 250 ... Control unit, 131 ... Vehicle information acquisition unit, 132 ... User identification unit, 133 ... Route inquiry unit, 134 ... Output control unit, 135, 262 ... Communication control unit, 136, 254 ... Route generation unit, 137 , 256 ... Derivation unit, 138, 258 ... Provided information generation unit, 139, 260 ... Management unit, 220 ... Input unit, 230 ... Output unit, 252 ... Acquisition unit, M ... Vehicle

Claims (9)

A route generator that generates multiple routes to the user's destination,
A derivation unit that derives evaluation values for roads constituting a plurality of routes generated by the route generation unit based on directivity information indicating the directivity of the user, and a derivation unit.
A provision information generation unit that generates provision information for the route generated by the route generation unit based on the evaluation value derived by the derivation unit is provided.
The route generation unit generates a reference route that is not based on the directional information and a directional route that is based on the directional information.
The provided information generation unit generates information provided for the directional route based on the evaluation value in the reference route derived by the derivation unit.
Information providing device. The derivation unit derives evaluation values for each of a plurality of evaluation indexes related to the road based on the direction information.
The provided information generation unit generates information provided for the directivity path based on the evaluation values in the reference path derived by the derivation unit that do not follow the directivity of the user.
The information providing device according to claim 1. Among the evaluation values for each road link constituting the reference route derived by the derivation unit, the provided information generation unit serves as an evaluation index of the road link from which the evaluation value most not in line with the directivity of the user is derived. Based on this, the provided information for the directional path is generated.
The information providing device according to claim 2. Further provided with a management unit that manages directivity information regarding the user's directivity.
The management unit manages the user's orientation information for each of a plurality of evaluation indexes related to predetermined roads.
The information providing device according to any one of claims 1 to 3. The management department
The deviation portion between the generated route generated by the route generation unit and provided to the user and the actual traveling route actually traveled by the vehicle driven by the user is extracted.
Difference data between the evaluation value of the road link of the generated route associated with the extracted divergence portion and the evaluation value of the road link of the actual traveling route associated with the divergence portion is derived, and the derived difference data is derived. Update the user's orientation information based on
The information providing device according to claim 4. The management unit updates the orientation information of the user when the evaluation value included in the difference data is equal to or greater than the threshold value.
The information providing device according to claim 5. The management unit derives the difference data of the evaluation value by adding a weight according to the length of the road of the road link corresponding to the actual traveling route deviating from the generated route or the time required to travel on the road. do,
The information providing device according to claim 5 or 6. The computer
Generate multiple routes to the user's destination,
The generated evaluation values for the roads constituting the plurality of routes are derived based on the directivity information indicating the directivity of the user.
Based on the derived evaluation value, the provided information for the generated route is generated.
When generating the plurality of routes, a reference route that is not based on the directional information and a directional route that is based on the directional information are generated.
Generates information provided for the directional route based on the evaluation value in the reference route.
Information provision method. On the computer
Generate multiple routes to the user's destination
The generated evaluation values for the roads constituting the plurality of routes are derived based on the directivity information indicating the directivity of the user.
Based on the derived evaluation value, the provided information for the generated route is generated.
When generating the plurality of routes, a reference route that is not based on the directional information and a directional route that is based on the directional information are generated.
The information provided for the directional route is generated based on the evaluation value in the reference route.
program.

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